EP3035503B1 - Dynamoelectric machine with a brake - Google Patents

Dynamoelectric machine with a brake Download PDF

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Publication number
EP3035503B1
EP3035503B1 EP14198182.9A EP14198182A EP3035503B1 EP 3035503 B1 EP3035503 B1 EP 3035503B1 EP 14198182 A EP14198182 A EP 14198182A EP 3035503 B1 EP3035503 B1 EP 3035503B1
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EP
European Patent Office
Prior art keywords
rotor
dynamo
brake
electric machine
brake rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP14198182.9A
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German (de)
French (fr)
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EP3035503A1 (en
Inventor
Frank Eckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP14198182.9A priority Critical patent/EP3035503B1/en
Priority to US14/969,850 priority patent/US10298092B2/en
Priority to CN201510938177.0A priority patent/CN105703532B/en
Publication of EP3035503A1 publication Critical patent/EP3035503A1/en
Application granted granted Critical
Publication of EP3035503B1 publication Critical patent/EP3035503B1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
    • H02K7/1008—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys structurally associated with the machine rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets
    • H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap

Definitions

  • the invention relates to a dynamo-electric machine with a stator and a shaft which can be rotated about an axis and which is connected to a rotor in a rotationally fixed manner, a brake being provided at least on one axial end face of the rotor.
  • Dynamoelectric machines are often braked in their dynamic operation and / or kept at a standstill in a defined manner.
  • specially arranged brakes are provided on the rotating parts of the dynamo-electric machine.
  • the rotors of the backlash-free built-in brakes i.e. the brake rotors in these dynamo-electric machines, are attached to the motor shaft with a rigid shaft-hub connection, like the actual rotors of the dynamo-electric machine.
  • This creates a two-mass oscillation system which is composed of a brake rotor that is non-rotatably connected to the shaft and the rotor of the dynamo-electric machine. Under certain conditions, this dual-mass oscillation system generates resonance oscillations which disrupt the engine operation and make position control or drive control difficult or impossible.
  • the disadvantage here is the comparatively high cost, which results, among other things, from an individual consideration of the respective dynamo-electric machine and the remedial measures associated therewith.
  • DE 10 2006 032 992 A1 discloses a rotor for an electrical machine, which has a rotor shaft, a rotor package and a rotor brake body.
  • the rotor package and the rotor brake body are fastened axially spaced apart on the rotor shaft and are directly connected to one another in a rotationally fixed manner.
  • EP 1 536 544 A2 discloses a drive motor for a vehicle component which has a stator, a motor rotor and a brake rotor which is implemented as part of the motor rotor for braking the vehicle component.
  • the invention is based on the object of providing a dynamo-electric machine with a brake which avoids the disadvantages mentioned above.
  • the construction of the rotating parts of the dynamo-electric machine according to the invention that is to say of the brake rotor on the rotor of this dynamo-electric machine, now eliminates the two-mass oscillation system.
  • the laminated core of the rotor and the brake rotor are rigidly connected to one another in the axial and / or radial direction as well as in the circumferential direction.
  • the overall structure of the dynamo-electric machine and brake is therefore also comparatively compact.
  • the rotor does not necessarily have to be laminated, it can also be designed as a sintered one-piece or multi-piece part.
  • the brake rotor is attached to the laminated core of the rotor of the dynamoelectric machine by axially extending recesses of the rotor, in particular by expanding dowels arranged in axially extending recesses of the laminated core of the rotor.
  • a coupling of the two masses, brake rotor and rotor of the dynamo-electric machine via the shaft, which can thus be excited to torsional vibrations, is thus avoided according to the invention.
  • torsional vibrations of the shaft are avoided due to the two masses, which enables or simplifies the control of the drive.
  • the inventive fastening of the brake rotor to the rotor via insert elements such as screws or bolts, which causes a pin to expand in an axial recess of the rotor, also eliminates the need to heat shrink the brake rotor onto the shaft.
  • FIG 1 shows in a partial longitudinal section, inter alia, a rotor 3 of a dynamoelectric machine 1, which is equipped with a shaft 7 is rotatably connected.
  • the rotor 3 is rotatably mounted about an axis 8.
  • the brake rotor 5 is connected to the laminated core 13 of the rotor 3 in one or more parts, preferably via an expansion dowel system 14, which will be explained in detail later.
  • FIG 1 also shows in this partial longitudinal section of the dynamoelectric machine 1 a stator 2, which has a winding system 18 which is formed by means of toothed coils or stringed coils and is located in not shown slots of the stator 2.
  • a stator 2 which has a winding system 18 which is formed by means of toothed coils or stringed coils and is located in not shown slots of the stator 2.
  • a machine can be connected via a feather key connection of the shaft 7.
  • the shaft 7 is held by a bearing 9 which is positioned in a bearing plate 19.
  • the rotor 3 is also built up by axially layered metal sheets to form a laminated core 13 which is non-rotatably connected to the shaft 7 and has axially extending recesses 4.
  • the laminated core is preferably heat-shrunk onto the shaft 7.
  • These axial recesses 4 serve i.a. the inclusion of the expansion anchor system 14 with which the brake rotor 5 is held directly on the laminated core of the rotor 3.
  • the brake rotor 5 also shows in the vicinity of the shaft 7 an axial sleeve-shaped extension 22 in the direction of the bearing 7, through which a sealing function is established between the shaft 7 and the sleeve-shaped extension 22.
  • the sleeve-shaped extension 22 is not connected to the shaft 7 in a rotationally fixed manner, but rather is oversized.
  • the sealing function can also be performed in this gap formed by excess can be improved by a labyrinth-like design of shaft 7 and / or sleeve-shaped extension 22.
  • a shaft stop 21 of the shaft 7 facilitates i.a. the assembly of the brake rotor 5 and rotor 3.
  • a predeterminable gap between the end face of the rotor 3 and the brake rotor 5 can be predetermined so that the axially extending recesses - if not all of them are occupied by expanding dowels - also provide cooling for the rotor 3 and / or the Brake rotor 5 are used.
  • a brake disk 10 is arranged on a surface 25 on a brake body 6 or on the brake rotor 5.
  • a brake gap 12 closes or opens and thus leads, among other things, for braking or fixing the standstill of the rotor 3.
  • the brake body 6 is arranged on the bearing plate 19 by means of a fastening 20.
  • FIG 2 shows as an example, not part of the claimed invention, in a more detailed representation of the expansion dowel system 14, in which a screw 15 can be screwed into a pin 16. Due to the design of the pin 16 by means of slots 17, when the screw 15 is screwed in, the at least two pin sides are expanded.
  • the brake rotor 5 By screwing in the screw 15 - advantageously via the recess on the side of the rotor 3 facing away from the brake rotor 5 - the brake rotor 5 is fixed on the rotor 3.
  • the expanding dowel wedges itself with its widening pin sides when the screw 5 is screwed into the recess 4 of the rotor 3.
  • the screw 15 itself engages in a thread in the brake rotor 5 provided for this purpose.
  • FIG 3 shows, as an embodiment of the claimed invention, the brake rotor 5 in a perspective view.
  • three pins 16 are arranged.
  • these three pins 16 each protrude into an axially extending recess 4 of the rotor 3
  • FIG 1 form brake rotor here 5, pin 16 and the axial sleeve-shaped extension 22 a one-piece element.
  • the pins 16 are also slotted and have a central bore.
  • the brake rotor 5 has a plurality of openings 24 distributed in the circumferential direction, which preferably correspond to the axial recesses 4 of the rotor 3. On the one hand, this facilitates the assembly of the brake rotor 5 on the end face of the rotor 3 and allows the rotor 3 to be cooled via the remaining axial openings 24 or recesses 4 which are not occupied by the pins 16.
  • FIG 4 shows FIG 4 the sleeve-shaped axial extension 22 of the brake rotor 5.
  • the openings 24 distributed in the circumferential direction can also be seen, through which a screw 15 can be used to expand the pin 16.
  • the expansion of the pin 16 can thus in principle take place by screwing in a screw 15 or inserting a bolt both from one side and from the other side of the brake rotor 5.
  • FIG 5 shows the brake rotor 5, which shows a screw 15 located in a pin 16, in a longitudinal section.
  • the screw 15 is inserted from the side facing away from the rotor 3.
  • the pin 16 is expanded by screwing the screw 15 into the bore of the pin 16.
  • a brake disk 10 can be positioned on the surface 25, which - if necessary - has corresponding openings in the area of the openings 24 in the brake disk 10.
  • the brake rotor 5 is thus by separate expansion dowel devices 14 according to FIG 1 and FIG 2 attached to the rotor 3, with insert elements such as screws 15 or bolts being positioned in the pin 16 via the axial recesses 4 of the rotor 3 and thereby spreading the pin 16, which causes wedging in the axial recess 4.
  • wedging in the axial recess 4 of the rotor 3 is achieved even with separate expansion dowel devices 14 by the insert elements, as in the one-piece designs of the brake rotor 5, for example FIG 5 are used from the side facing away from the rotor 3.
  • the insert elements such as screws 15 or bolts, can be positioned from both sides of the brake rotor 5 for fixing to the rotor 3.
  • Such brakes for dynamoelectric machines 1 are used primarily in machine tools and / or positioning drives for the provision or removal of tools or workpieces. Precise control of the drives is necessary there in order to guarantee the specified safety requirements and quality requirements for the manufactured products.
  • brake rotors 5 not only brake rotors 5 but also other elements such as fan blades, balancing weights, masses to increase inertia, balancing disks, etc. are to be attached to the rotor 3 by such a fastening method in order to eliminate the problem of dual-mass oscillators there as well.
  • These elements are structurally in terms of their attachment to the rotor 3 also in one piece with pin 16 FIG 3, 4 , 5 or a separate expansion anchor system 14 after FIG 1 and FIG 2 fitted.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Die Erfindung betrifft eine dynamoelektrische Maschine mit einem Stator und einer um eine Achse drehbaren Welle, die mit einem Rotor drehfest verbunden ist, wobei zumindest an einer axialen Stirnseite des Rotors eine Bremse vorgesehen ist.The invention relates to a dynamo-electric machine with a stator and a shaft which can be rotated about an axis and which is connected to a rotor in a rotationally fixed manner, a brake being provided at least on one axial end face of the rotor.

Dynamoelektrische Maschinen werden in ihrem dynamischen Betrieb häufig abgebremst und/oder im Stillstand definiert gehalten. Dazu sind speziell angeordnete Bremsen an den sich drehenden Teilen der dynamoelektrischen Maschine vorgesehen.Dynamoelectric machines are often braked in their dynamic operation and / or kept at a standstill in a defined manner. For this purpose, specially arranged brakes are provided on the rotating parts of the dynamo-electric machine.

Die Rotoren der verdrehspielfreien Einbaubremsen, also die Bremsrotoren in diesen dynamoelektrischen Maschinen werden, wie die eigentlichen Rotoren der dynamoelektrischen Maschine mit einer starren Welle-Nabe-Verbindung auf der Motorwelle befestigt. Dadurch entsteht ein Zweimassenschwingsystem, das sich aus jeweils einem drehfest mit der Welle verbundenen Bremsenrotor und dem Rotor der dynamoelektrischen Maschine zusammensetzt. Dieses Zweimassenschwingsystem erzeugt unter bestimmten Bedingungen für den Motorbetrieb störende Resonanzschwingungen, die eine Lageregelung oder eine Antriebsregelung erschweren oder unmöglich machen.The rotors of the backlash-free built-in brakes, i.e. the brake rotors in these dynamo-electric machines, are attached to the motor shaft with a rigid shaft-hub connection, like the actual rotors of the dynamo-electric machine. This creates a two-mass oscillation system, which is composed of a brake rotor that is non-rotatably connected to the shaft and the rotor of the dynamo-electric machine. Under certain conditions, this dual-mass oscillation system generates resonance oscillations which disrupt the engine operation and make position control or drive control difficult or impossible.

Diese störenden Resonanzschwingungen können bisher lediglich durch eine Designänderung an der Welle, am Blechpaket des Rotors oder der Bremse vorgenommen werden, um somit diese Schwingungen in den normalen Betriebsfällen der dynamoelektrischen Maschine in unkritische Frequenzbereiche zu verschieben.These disruptive resonance vibrations can previously only be carried out by changing the design of the shaft, the laminated core of the rotor or the brake, in order to shift these vibrations into non-critical frequency ranges in the normal operating cases of the dynamoelectric machine.

Nachteilig dabei ist der vergleichsweise hohe Aufwand, der u.a. aus einer Einzelfallbetrachtung der jeweiligen dynamoelektrischen Maschine und damit verbundenen Abhilfemaßnahmen resultiert.The disadvantage here is the comparatively high cost, which results, among other things, from an individual consideration of the respective dynamo-electric machine and the remedial measures associated therewith.

DE 10 2006 032 992 A1 offenbart einen Rotor für eine elektrische Maschine, welcher eine Rotorwelle, ein Rotorpaket und einen Rotorbremskörper aufweist. Das Rotorpaket und der Rotorbremskörper sind axial beabstandet auf der Rotorwelle befestigt und unmittelbar drehfest miteinander verbunden. DE 10 2006 032 992 A1 discloses a rotor for an electrical machine, which has a rotor shaft, a rotor package and a rotor brake body. The rotor package and the rotor brake body are fastened axially spaced apart on the rotor shaft and are directly connected to one another in a rotationally fixed manner.

EP 1 536 544 A2 offenbart einen Antriebsmotor für eine Fahrzeugkomponente, der einen Stator, einen Motorrotor und einen Bremsrotor, der als Teil des Motorrotors zum Bremsen der Fahrzeugkomponente ausgeführt ist, aufweist. EP 1 536 544 A2 discloses a drive motor for a vehicle component which has a stator, a motor rotor and a brake rotor which is implemented as part of the motor rotor for braking the vehicle component.

Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, eine dynamoelektrische Maschine mit einer Bremse vorzusehen, die die oben genannten Nachteile vermeidet.Proceeding from this, the invention is based on the object of providing a dynamo-electric machine with a brake which avoids the disadvantages mentioned above.

Die Lösung der gestellten Aufgabe gelingt durch eine dynamoelektrische Maschine mit den im Anspruch 1 angegebenen Merkmalen.The problem posed is achieved by a dynamo-electric machine with the features specified in claim 1.

Durch den erfindungsgemäßen Aufbau der rotierenden Teile der dynamoelektrischen Maschine, also des Bremsrotors am Rotor dieser dynamoelektrischen Maschine wird nunmehr das Zweimassenschwingsystem eliminiert. Das Blechpaket des Rotors und der Bremsrotor sind in axialer und/oder radialer Richtung ebenso in Umfangsrichtung starr miteinander verbunden. Vorteilhafterweise wird damit auch der Gesamtaufbau von dynamoelektrischer Maschine und Bremse vergleichsweise kompakt.The construction of the rotating parts of the dynamo-electric machine according to the invention, that is to say of the brake rotor on the rotor of this dynamo-electric machine, now eliminates the two-mass oscillation system. The laminated core of the rotor and the brake rotor are rigidly connected to one another in the axial and / or radial direction as well as in the circumferential direction. Advantageously, the overall structure of the dynamo-electric machine and brake is therefore also comparatively compact.

Der Rotor muss dabei nicht zwangsläufig geblecht ausgeführt sein, er kann ebenso als gesintertes ein- oder mehrstückiges Teil ausgeführt sein.The rotor does not necessarily have to be laminated, it can also be designed as a sintered one-piece or multi-piece part.

In einfacher Art und Weise wird dabei der Bremsrotor am Blechpaket des Rotors der dynamoelektrischen Maschine durch in axial verlaufende Ausnehmungen des Rotors, insbesondere durch in axial verlaufende Ausnehmungen des Blechpakets des Rotors angeordneten Spreizdübel befestigt.In a simple manner, the brake rotor is attached to the laminated core of the rotor of the dynamoelectric machine by axially extending recesses of the rotor, in particular by expanding dowels arranged in axially extending recesses of the laminated core of the rotor.

Damit entsteht lediglich eine kompakte Masse - Bremsrotor zusammen mit dem Rotor, die gebremst oder beschleunigt werden muss und somit bei wechselnden Betriebszuständen der dynamoelektrischen Maschine Schwingen vermeidet.This only creates a compact mass - brake rotor together with the rotor, which are braked or accelerated must and thus avoids vibrations in changing operating states of the dynamo-electric machine.

Eine Kopplung der beiden Massen, Bremsrotor und Rotor der dynamoelektrischen Maschine über die Welle, die damit zu Torsionsschwingungen angeregt werden kann, ist damit erfindungsgemäß vermieden. Bei hochdynamischen Vorgängen des Antriebs werden dabei Torsionsschwingungen der Welle aufgrund der beiden Massen vermieden, was die Regelung des Antriebs ermöglicht bzw. vereinfacht.A coupling of the two masses, brake rotor and rotor of the dynamo-electric machine via the shaft, which can thus be excited to torsional vibrations, is thus avoided according to the invention. With highly dynamic processes of the drive, torsional vibrations of the shaft are avoided due to the two masses, which enables or simplifies the control of the drive.

Durch die erfindungsgemäße Befestigung des Bremsrotors am Rotor über Einsatzelemente, wie Schrauben oder Bolzen, die eine Spreizung eines Zapfens in einer axialen Ausnehmung des Rotors bewirkt, entfällt auch ein Warmschrumpfen des Bremsrotors auf die Welle.The inventive fastening of the brake rotor to the rotor via insert elements such as screws or bolts, which causes a pin to expand in an axial recess of the rotor, also eliminates the need to heat shrink the brake rotor onto the shaft.

Ebenso sind auch andere normalerweise direkt auf der Welle positionierte Rotorelemente, wie Wuchtscheiben, Lüfterscheiben, Endbleche des Rotors, auf diese Art und Weise am Rotor zur Vermeidung von Torsionsschwingungen nunmehr direkt an der Stirnseite des Rotors der dynamoelektrischen Maschine befestigbar.Likewise, other rotor elements normally positioned directly on the shaft, such as balancing disks, fan disks, end plates of the rotor, can now be fastened directly to the end face of the rotor of the dynamo-electric machine in this way to avoid torsional vibrations.

Die Erfindung sowie vorteilhafte Ausgestaltungen der Erfindung werden anhand von Beispielen näher erläutert. Darin zeigen:

FIG 1
einen Teillängsschnitt des Anbaus der Bremse an einen Rotor der dynamoelektrischen Maschine,
FIG 2
ein Spreizdübelsystem,
FIG 3,4
eine perspektivische Darstellung eines Bremsrotors und
FIG 5
einen Längsschnitt eines Bremsrotors.
The invention and advantageous embodiments of the invention are explained in more detail using examples. Show in it:
FIG 1
a partial longitudinal section of the attachment of the brake to a rotor of the dynamo-electric machine,
FIG 2
an expansion anchor system,
FIG 3.4
a perspective view of a brake rotor and
FIG 5
a longitudinal section of a brake rotor.

FIG 1 zeigt in einem Teillängsschnitt u.a. einen Rotor 3 einer dynamoelektrischen Maschine 1, der mit einer Welle 7 drehfest verbunden ist. Der Rotor 3 ist dabei um eine Achse 8 drehbar gelagert. An der einen Stirnseite des Rotors 3 befindet sich ein Bremsrotor 5 mit einer hülsenförmigen axialen Erstreckung 22, die vom Rotor 3 wegweist. Der Bremsrotor 5 ist mit dem Blechpaket 13 des Rotors 3 vorzugsweise über ein Spreizdübelsystem 14 ein- oder mehrteilig verbunden, was später im Detail noch ausgeführt wird. FIG 1 shows in a partial longitudinal section, inter alia, a rotor 3 of a dynamoelectric machine 1, which is equipped with a shaft 7 is rotatably connected. The rotor 3 is rotatably mounted about an axis 8. On one end of the rotor 3 there is a brake rotor 5 with a sleeve-shaped axial extension 22 which points away from the rotor 3. The brake rotor 5 is connected to the laminated core 13 of the rotor 3 in one or more parts, preferably via an expansion dowel system 14, which will be explained in detail later.

FIG 1 zeigt außerdem in diesem Teillängsschnitt der dynamoelektrischen Maschine 1 einen Stator 2, der ein Wicklungssystem 18 aufweist, das mittels Zahnspulen oder gesehnten Spulen ausgebildet ist und sich in nicht näher dargestellten Nuten des Stators 2 befindet. Durch elektromagnetische Wechselwirkung des bestromten Wicklungssystems 18 des Stators 2 und dem Rotor 3 über den Luftspalt 11 der dynamoelektrischen Maschine 1 tritt eine Drehung des Rotors 3 um die Achse 8 auf. FIG 1 also shows in this partial longitudinal section of the dynamoelectric machine 1 a stator 2, which has a winding system 18 which is formed by means of toothed coils or stringed coils and is located in not shown slots of the stator 2. As a result of the electromagnetic interaction between the energized winding system 18 of the stator 2 and the rotor 3 via the air gap 11 of the dynamoelectric machine 1, the rotor 3 rotates about the axis 8.

Über eine Passfederverbindung der Welle 7 kann eine Arbeitsmaschine angeschlossen werden.A machine can be connected via a feather key connection of the shaft 7.

Die Welle 7 ist durch ein Lager 9 gehalten, das in einem Lagerschild 19 positioniert ist.The shaft 7 is held by a bearing 9 which is positioned in a bearing plate 19.

Der Rotor 3 ist ebenfalls durch axial geschichtete Bleche zu einem Blechpaket 13 aufgebaut, das drehfest mit der Welle 7 verbunden ist und axial verlaufende Ausnehmungen 4 aufweist. Dabei ist das Blechpaket vorzugsweise auf die Welle 7 warmgeschrumpft worden. Diese axialen Ausnehmungen 4 dienen u.a. der Aufnahme des Spreizdübelsystems 14, mit dem der Bremsrotor 5 direkt am Blechpaket des Rotors 3 gehalten wird.The rotor 3 is also built up by axially layered metal sheets to form a laminated core 13 which is non-rotatably connected to the shaft 7 and has axially extending recesses 4. The laminated core is preferably heat-shrunk onto the shaft 7. These axial recesses 4 serve i.a. the inclusion of the expansion anchor system 14 with which the brake rotor 5 is held directly on the laminated core of the rotor 3.

Der Bremsrotor 5 zeigt außerdem in der Nähe der Welle 7 eine axiale hülsenförmige Erstreckung 22 in Richtung des Lagers 7, durch die sich eine Dichtfunktion zwischen Welle 7 und hülsenförmiger Erstreckung 22 einstellt. Dabei ist die hülsenförmige Erstreckung 22 aber mit der Welle 7 nicht drehfest verbunden ist, sondern weist ein Übermaß auf. In diesem durch Übermaß gebildeten Zwischenraum kann die Dichtfunktion auch durch eine labyrinthähnliche Gestaltung von Welle 7 und/oder hülsenförmiger Erstreckung 22 verbessert werden.The brake rotor 5 also shows in the vicinity of the shaft 7 an axial sleeve-shaped extension 22 in the direction of the bearing 7, through which a sealing function is established between the shaft 7 and the sleeve-shaped extension 22. In this case, the sleeve-shaped extension 22 is not connected to the shaft 7 in a rotationally fixed manner, but rather is oversized. The sealing function can also be performed in this gap formed by excess can be improved by a labyrinth-like design of shaft 7 and / or sleeve-shaped extension 22.

Ein Wellenanschlag 21 der Welle 7 erleichtert u.a. die Montage von Bremsrotor 5 und Rotor 3. Dabei kann ein vorgebbarer Spalt zwischen Stirnseite des Rotors 3 und Bremsrotor 5 vorbestimmt werden, so dass die axial verlaufenden Ausnehmungen - sofern nicht alle durch Spreizdübel belegt sind - auch der Kühlung des Rotors 3 und/oder des Bremsrotors 5 dienen.A shaft stop 21 of the shaft 7 facilitates i.a. the assembly of the brake rotor 5 and rotor 3. A predeterminable gap between the end face of the rotor 3 and the brake rotor 5 can be predetermined so that the axially extending recesses - if not all of them are occupied by expanding dowels - also provide cooling for the rotor 3 and / or the Brake rotor 5 are used.

Um eine Bremswirkung zu entfalten, ist an einem Bremskörper 6 oder am Bremsrotor 5 eine Bremsscheibe 10 an einer Fläche 25 angeordnet. Durch eine dementsprechende Arbeits- oder Ruhestromschaltung eines elektromagnetischen Systems, das im Bremskörper 6 angeordnet ist, schließt bzw. öffnet ein Bremsspalt 12 und führt somit u.a. zur Bremsung bzw. Fixierung des Stillstandes des Rotors 3. Der Bremskörper 6 ist mittels einer Befestigung 20 am Lagerschild 19 angeordnet.In order to develop a braking effect, a brake disk 10 is arranged on a surface 25 on a brake body 6 or on the brake rotor 5. By means of a corresponding open-circuit or closed-circuit current circuit of an electromagnetic system, which is arranged in the brake body 6, a brake gap 12 closes or opens and thus leads, among other things, for braking or fixing the standstill of the rotor 3. The brake body 6 is arranged on the bearing plate 19 by means of a fastening 20.

FIG 2 zeigt als Beispiel, nicht Teil der beanspruchten Erfindung, in einer näheren Darstellung das Spreizdübelsystem 14, bei der eine Schraube 15 in einen Zapfen 16 eindrehbar ist. Aufgrund der Gestaltung des Zapfens 16 mittels Schlitzen 17 erfolgt bei Eindrehen der Schraube 15 eine Aufweitung der zumindest zwei Zapfenseiten. Durch Eindrehen der Schraube 15 - vorteilhafterweise über die Ausnehmung von der dem Bremsenrotor 5 abgewandten Seite des Rotors 3 - erfolgt eine Fixierung des Bremsrotors 5 am Rotor 3. Der Spreizdübel verkeilt sich dabei mit seinen sich aufweitenden Zapfenseiten bei Eindrehen der Schraube 5 in der Ausnehmung 4 des Rotors 3. Die Schraube 15 selbst greift in ein dafür vorgehendes Gewinde im Bremsrotor 5 ein. FIG 2 shows as an example, not part of the claimed invention, in a more detailed representation of the expansion dowel system 14, in which a screw 15 can be screwed into a pin 16. Due to the design of the pin 16 by means of slots 17, when the screw 15 is screwed in, the at least two pin sides are expanded. By screwing in the screw 15 - advantageously via the recess on the side of the rotor 3 facing away from the brake rotor 5 - the brake rotor 5 is fixed on the rotor 3. The expanding dowel wedges itself with its widening pin sides when the screw 5 is screwed into the recess 4 of the rotor 3. The screw 15 itself engages in a thread in the brake rotor 5 provided for this purpose.

FIG 3 zeigt als Ausführungsbeispiel der beanspruchten Erfindung den Bremsrotor 5 in einer perspektivischen Darstellung. In dieser Ausführung des Bremsrotors 5 sind drei Zapfen 16 angeordnet. Im eingebauten Zustand des Bremsrotors 5 an die eine Stirnseite des Rotors 3 ragen diese drei Zapfen 16 in jeweils eine axial verlaufende Ausnehmung 4 des Rotors 3. Entgegen der Darstellung gemäß FIG 1 bilden hier Bremsrotor 5, Zapfen 16 und die axiale hülsenförmige Erstreckung 22 ein einteiliges Element. Die Zapfen 16 sind ebenfalls geschlitzt ausgeführt und weisen eine zentrale Bohrung auf. Der Bremsrotor 5 weist in Umfangsrichtung verteilt mehrere Öffnungen 24 auf, die vorzugsweise mit den axialen Ausnehmungen 4 des Rotors 3 korrespondieren. Dies erleichtert zum einen die Montage des Bremsrotors 5 an die Stirnseite des Rotors 3, und gestattet eine Kühlung des Rotors 3 über die verbleibenden axialen Öffnungen 24 bzw. Ausnehmungen 4, die nicht durch die Zapfen 16 belegt sind. FIG 3 shows, as an embodiment of the claimed invention, the brake rotor 5 in a perspective view. In this embodiment of the brake rotor 5, three pins 16 are arranged. In the installed state of the brake rotor 5 on one end face of the rotor 3, these three pins 16 each protrude into an axially extending recess 4 of the rotor 3 FIG 1 form brake rotor here 5, pin 16 and the axial sleeve-shaped extension 22 a one-piece element. The pins 16 are also slotted and have a central bore. The brake rotor 5 has a plurality of openings 24 distributed in the circumferential direction, which preferably correspond to the axial recesses 4 of the rotor 3. On the one hand, this facilitates the assembly of the brake rotor 5 on the end face of the rotor 3 and allows the rotor 3 to be cooled via the remaining axial openings 24 or recesses 4 which are not occupied by the pins 16.

In einer weiteren perspektivischen Darstellung des Bremsrotors 5 nach FIG 3, zeigt FIG 4 die hülsenförmige axiale Erstreckung 22 des Bremsrotors 5. Ebenso sind die Umfangsrichtung verteilten Öffnungen 24 zu sehen, über die eine Schraube 15 zur Spreizung des Zapfens 16 einsetzbar ist.In a further perspective illustration of the brake rotor 5 according to FIG 3 , shows FIG 4 the sleeve-shaped axial extension 22 of the brake rotor 5. The openings 24 distributed in the circumferential direction can also be seen, through which a screw 15 can be used to expand the pin 16.

Die Spreizung des Zapfens 16 kann somit grundsätzlich durch Eindrehen einer Schraube 15 oder Einsetzen eines Bolzens sowohl von der einen als auch von der anderen Seite des Bremsrotors 5 erfolgen.The expansion of the pin 16 can thus in principle take place by screwing in a screw 15 or inserting a bolt both from one side and from the other side of the brake rotor 5.

FIG 5 zeigt in einem Längsschnitt den Bremsrotor 5, der eine in einem Zapfen 16 befindliche Schraube 15 zeigt. In dieser Ausführung wird die Schraube 15 von der dem Rotor 3 abgewandten Seite eingesetzt. Die Spreizung des Zapfens 16 erfolgt durch Eindrehen der Schraube 15 in die Bohrung des Zapfens 16. An der Fläche 25 kann eine Bremsscheibe 10 positioniert werden, die - sofern notwendig - im Bereich der Öffnungen 24 in der Bremsscheibe 10 dazu korrespondierende Öffnungen aufweist. FIG 5 shows the brake rotor 5, which shows a screw 15 located in a pin 16, in a longitudinal section. In this embodiment, the screw 15 is inserted from the side facing away from the rotor 3. The pin 16 is expanded by screwing the screw 15 into the bore of the pin 16. A brake disk 10 can be positioned on the surface 25, which - if necessary - has corresponding openings in the area of the openings 24 in the brake disk 10.

Der Bremsrotor 5 wird also durch separate Spreizdübelvorrichtungen 14 gemäß FIG 1 und FIG 2 am Rotor 3 befestigt, wobei Einsatzelemente, wie Schrauben 15 oder Bolzen über die axialen Ausnehmungen 4 des Rotors 3 in den Zapfen 16 positioniert werden und dadurch eine Spreizung des Zapfens 16 erreichen, die eine Verkeilung in der axialen Ausnehmung 4 bewirkt. Alternativ dazu wird auch bei separaten Spreizdübelvorrichtungen 14 eine Verkeilung in der axialen Ausnehmung 4 des Rotors 3 erreicht, indem die Einsatzelemente, wie bei den einteiligen Ausführungen des Bremsrotors 5 beispielsweise nach FIG 5 von der dem Rotor 3 abgewandten Seite eingesetzt werden.The brake rotor 5 is thus by separate expansion dowel devices 14 according to FIG 1 and FIG 2 attached to the rotor 3, with insert elements such as screws 15 or bolts being positioned in the pin 16 via the axial recesses 4 of the rotor 3 and thereby spreading the pin 16, which causes wedging in the axial recess 4. Alternatively to this end, wedging in the axial recess 4 of the rotor 3 is achieved even with separate expansion dowel devices 14 by the insert elements, as in the one-piece designs of the brake rotor 5, for example FIG 5 are used from the side facing away from the rotor 3.

Auch bei dem einteiligen Bremsrotor 5, der einstückig hülsenförmige Erstreckung 22, den Bremsrotor 5 und die Zapfen 16 aufweist, kann eine Positionierung der Einsatzelemente, wie Schrauben 15 oder Bolzen von beiden Seiten des Bremsrotors 5 zur Fixierung am Rotor 3 erfolgen.Also with the one-piece brake rotor 5, which has a one-piece sleeve-shaped extension 22, the brake rotor 5 and the pins 16, the insert elements, such as screws 15 or bolts, can be positioned from both sides of the brake rotor 5 for fixing to the rotor 3.

Derartige Bremsen für dynamoelektrische Maschinen 1 werden vor allem bei Werkzeugmaschinen und/oder Positionierantrieben für das Bereitstellen oder den Abtransport von Werkzeugen oder Werkstücken eingesetzt. Dort ist eine genaue Regelung der Antriebe notwendig, um vorgegebene Sicheranforderungen und Qualitätsanforderungen der hergestellten Produkte zu gewährleisten.Such brakes for dynamoelectric machines 1 are used primarily in machine tools and / or positioning drives for the provision or removal of tools or workpieces. Precise control of the drives is necessary there in order to guarantee the specified safety requirements and quality requirements for the manufactured products.

Selbstverständlich sind durch eine derartige Befestigungsweise - nicht nur Bremsrotoren 5 sondern auch andere Elemente wie Lüfterflügel, Ausgleichsmassen, Massen zur Erhöhung der Trägheit, Wuchtscheiben etc. am Rotor 3 zu befestigen, um auch dort die Problematik der Zweimassenschwinger zu beheben. Diese Elemente sind konstruktiv hinsichtlich ihrer Befestigung am Rotor 3 ebenso einteilig mit Zapfen 16 nach FIG 3, 4, 5 oder einem separaten Spreizdübelsystem 14 nach FIG 1 und FIG 2 ausgestattet.Of course, not only brake rotors 5 but also other elements such as fan blades, balancing weights, masses to increase inertia, balancing disks, etc. are to be attached to the rotor 3 by such a fastening method in order to eliminate the problem of dual-mass oscillators there as well. These elements are structurally in terms of their attachment to the rotor 3 also in one piece with pin 16 FIG 3, 4 , 5 or a separate expansion anchor system 14 after FIG 1 and FIG 2 fitted.

Claims (13)

  1. Dynamo-electric machine (1) having a stator (2) and a shaft (7) which can be rotated about an axis (8), said shaft being connected to a rotor (3) in a torsion-resistant manner, wherein a brake (5, 6, 10) is arranged at least on one axial front side of the rotor (3), wherein the brake (5, 6, 10) has a solely axially displaceable brake body (6) and a brake rotor (5), which is directly connected to the laminated core (13) of the rotor (3),
    characterised in that
    the brake rotor (5) has axially extending pivots (16) in the direction of the rotor (3) at least in sections corresponding to axial recesses (4) of the rotor (3), said pivots being suited to axially receiving an element, wherein the axially extending pivots (16) have slots (17) which spread by positioning the element in the pivot (16) and thus wedge together in the recess of the rotor (3) in a torsion-resistant manner and wherein the brake rotor (5) is embodied in one piece with the pivots (16).
  2. Dynamo-electric machine (1) according to claim 1,
    characterised in that the brake rotor (5) is mounted axially on the front side of the rotor (3).
  3. Dynamo-electric machine (1) according to claim 2,
    characterised in that the mounting of the brake rotor (5) on the rotor (3) takes place by means of at least one spreading apparatus, which becomes wedged together at least in the axial recess (4) of the laminated core (13) of the rotor (3).
  4. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the rotor (3) has a laminated core (13) comprising axially layered sheets or is embodied as a sintered single-piece or multi-piece part.
  5. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the mounting of the brake rotor (5) on the rotor (3) by way of the element (15), which effects a spreading of the pivot (16) in an axial recess of the rotor, is provided as a replacement for a heat-shrinking of the brake rotor (5) on the shaft (7) of the dynamo-electric machine (1).
  6. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the spreading of the pivot (16) can be carried out by screwing in a screw (15) or inserting a bolt both from the one side and also from the other side of the brake rotor (5).
  7. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the brake rotor (5), the pivots (16) and an axial sleeve-shaped extension (22) form a single-piece element.
  8. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the pivots (16) are embodied to be slotted and have a central borehole.
  9. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the brake rotor (5) has a number of openings (24) which are distributed in the peripheral direction and which correspond to the axial recesses (4) of the rotor (3).
  10. Dynamo-electric machine (1) according to one of the preceding claims,
    characterised in that the brake rotor (5) is embodied in one piece and has a sleeve-shaped extension (22) and the pivots (16) in one piece.
  11. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that a positioning of the elements (15) can be carried out from both sides of the brake rotor (5) in order to fix to the rotor (3).
  12. Dynamo-electric machine (1) according to one of the preceding claims, characterised in that the element is a screw (15) or a bolt.
  13. Machine tool or positioning drive with a dynamo-electric machine (1) according to one of the preceding claims 1 to 12.
EP14198182.9A 2014-12-16 2014-12-16 Dynamoelectric machine with a brake Active EP3035503B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14198182.9A EP3035503B1 (en) 2014-12-16 2014-12-16 Dynamoelectric machine with a brake
US14/969,850 US10298092B2 (en) 2014-12-16 2015-12-15 Dynamo-electric machine with a brake
CN201510938177.0A CN105703532B (en) 2014-12-16 2015-12-15 Electromechanical machines with brake apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14198182.9A EP3035503B1 (en) 2014-12-16 2014-12-16 Dynamoelectric machine with a brake

Publications (2)

Publication Number Publication Date
EP3035503A1 EP3035503A1 (en) 2016-06-22
EP3035503B1 true EP3035503B1 (en) 2020-08-26

Family

ID=52272842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14198182.9A Active EP3035503B1 (en) 2014-12-16 2014-12-16 Dynamoelectric machine with a brake

Country Status (3)

Country Link
US (1) US10298092B2 (en)
EP (1) EP3035503B1 (en)
CN (1) CN105703532B (en)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
EP3035503B1 (en) * 2014-12-16 2020-08-26 Siemens Aktiengesellschaft Dynamoelectric machine with a brake
CN108302142B (en) * 2017-12-28 2019-11-12 湖北三环车桥有限公司 The assembly method of pin type wheel hub brake disk assembly for commercial vehicle
CN108400674B (en) * 2018-05-15 2024-09-06 梁再心 Braking structure of motor
CN109327103A (en) * 2018-10-15 2019-02-12 深圳国汽奥源科技有限公司 Increase journey generator

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US1972715A (en) * 1933-12-14 1934-09-04 Newhall Henry B Corp Bolt anchor
US3171322A (en) * 1962-08-28 1965-03-02 Kaplan Stanley Anchor bolt
DE2242073A1 (en) * 1972-08-26 1974-03-07 Brinkmann Karl Ernst ELECTROMAGNETIC RELEASE SPRING-PRESSURE BRAKE
US4734604A (en) * 1986-08-01 1988-03-29 Cuisinarts, Inc. Friction braking system and apparatus for appliance induction motor drive
US6162234A (en) * 1993-03-23 2000-12-19 Freedland; Yosef Adjustable button cinch anchor orthopedic fastener
DE29820814U1 (en) * 1998-11-20 1999-02-04 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH, 46537 Dinslaken Brake with play adjustment
US20050110353A1 (en) * 2003-11-26 2005-05-26 Kramer Dennis A. Traction motor with disc brake rotor
CN2684445Y (en) * 2003-12-17 2005-03-09 青岛天一集团红旗电机有限公司 Brake motor
DE102006032992A1 (en) * 2006-07-17 2008-01-31 Siemens Ag Rotor for an electric machine and electric machine with such a rotor
DE502007003786D1 (en) * 2007-11-19 2010-06-24 Siemens Ag Electric machine with magnetic brake directly on the rotor
US9133630B2 (en) * 2013-06-14 2015-09-15 Dean Dougherty Fastener anchor repair system and method
EP3035503B1 (en) * 2014-12-16 2020-08-26 Siemens Aktiengesellschaft Dynamoelectric machine with a brake

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Also Published As

Publication number Publication date
EP3035503A1 (en) 2016-06-22
US20160172932A1 (en) 2016-06-16
US10298092B2 (en) 2019-05-21
CN105703532A (en) 2016-06-22
CN105703532B (en) 2019-02-15

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